EdX recommends that you designate course staff and optionally student teaching
assistants (TAs) to moderate team discussions. The same discussion
administration roles for managing course discussions on the Discussions page
apply to discussion administration for team discussions. Course team members and
student TAs who already have discussion moderation roles for course discussions
on the Discussions page can perform the same roles for discussions in teams.

Members of the team, discussion community TAs, and course staff with the roles
of Discussion Admin or Discussion Moderator can post to a team’s discussion.
Team members can edit their own posts, reply to posts and comments, follow and
flag posts, and so on.

Posts made by discussion community TAs are marked with a Community TA label
in the discussion navigation pane, and those made by discussion moderators or
discussion admins are marked with a Staff label.